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A Diesel Particulate Filter (or DPF) captures soot particles, and is an essential component of any modern diesel engine, but can become blocked over time, and replacement isn't cheap. Fortunately many of our friendly, expert garages across Romford offer chemical cleaning as an alternative, so you can receive competitive Mazda quotes FAST.

Very good experience with this garage. Happy with the result, they were able to assist and eliminate the fault.
Many thanks.

02.11.16

Elizabeth, BMW 5 Series

A bit of impatience when being asked questions..Will not recommend ladies who know less about cars as you will not be given answers.Fantastic receptionist though ...No receipts given to customers for the payments done...

01.11.16

Judith, Volkswagen Polo

Saved me a lot of money and sorted my problem!

27.10.16

Joe, Audi A3

From the moment in contact was very impressed with the quote beat others hands down and what also impressed me was the almost immediate response to any questions asked.
On the work they stuck by their word and delivered which is why they deserve a 5 star rating. I have no hesitation in recommending them for a first class service

Highly recommended garage. Very honest and professional with excellent customer service. Work was carried out to high standard, no unnecessary work done. Also carried out a health check on the car which most garages don't do. Have re-booked this garage to get more work done and would definitely be coming back in the future.

01.08.16

Loong, Ford Fiesta

Highly recommended professional and friendly service. Parts were fitted in accordance with agreed competitive price. Would definitely use again.

31.07.16

N, Volkswagen Golf

Excellent Service.. Parts were fitted as described and the price agreed was a very good one. Would recommend this garage to everyone A+

15.07.16

T, Volkswagen Golf

Professional work, good price, excellent service would use again.thank you

16.04.16

Karim, Peugeot 207

Arrived on time. once fully repaired showed all replaced parts and only worked on once cleared with me step by step. Was more expensive than original quote and waited for the difference being so close to Christmas. Extremely satisfied with his workmanship, his thoughtfulness of entering into my home without boots on and his understanding along with politeness and was at no time badgering. I believe that this man conducted his business, which is gained via this site normally on distress of the vehicle owner. Thank you A&M.

"Prestige MOT Centre offer a wide range of garage services including MOT & Servicing , also specializing in BMW, Mercedes, Porsche, Lexus and Land rover. We strive to make sure customer has up most satisfaction with the services we provide. "

Hopefully our FAQ section has answered some of the questions you may have about diesel particulate filters, however, if you would like more information, we have the following guide help you understand more about your Mazda Ever since 2009, the Euro 5 standard has been enforced, a rule which ensures all new diesel Mazda must have particulate filters fitted.

These pieces of equipment were introduced in an effort to reduce the particle and soot emissions from diesel engines. Diesel Particulate filters (DPF) trap soot before it blows out of an exhaust and like any filter, it requires cleaning in order to maintain performance.

Fortunately the filter itself has self-cleaning capabilities known as regeneration.

There are two types of regeneration which can be carried out on your Mazda.

Passive Regeneration

This process happens automatically while the exhaust is at a high temperature which will usually occur when you are driving down a motorway or quickly down an A-road. However, as many vehicles aren’t always being driven at high speeds, an alternative system for regeneration exists.

Active Regeneration

This method of cleaning the DFP is controlled by an engine management computer and happens automatically when the filter reaches 45% of its limit. The process is initiated by the fuel injection being increased which makes the exhaust heat up and therefore clear the filter. However, if your drive is a short one and the process tries to initiate, it will not be able to properly clear the filter, in this eventuality, the warning light in your car will come on.

A drive of about ten minutes at a speed of around 40mph should be adequate for the process to be successful.

Here are the signs of automatic regeneration

Cooling fans running

Increased idle speed

Deactivation of automatic stop/start

A slight increase in fuel consumption

A hot and strong smell emitting from the exhaust

The note of the engine changing
However if the regeneration is unsuccessful, the fuel which is earmarked to burnt, will have to drain into the sump.

This will result in the oil quality in your Mazda getting worst and its level will rise.

That is why it is important that you keep an eye on your oil levels at all times as any drops, change in viscosity or mixing with other agents such as lubricant or water, can cause serious damage.

You should have an automatic sensor in your Mazda to warn you of any impending damage, which should not be ignored as the entire engine will be at risk.

If you do ignore the DPF light the filter will reach a point where it cannot function and other warning lights will come on as other parts of the engine are effected. If the soot level reached 70-75% you have no choice but to take the car to a garage and have it manually refreshed.

What prevents automation regeneration?

Lots of small journeys

Wrong oil type

Gas recirculation malfunction

Constant low fuel level

Low additive levels
If these issues are effecting your Mazda it is almost certain that you will need your filter replacing which is likely to cost upwards of £1000 including diagnostic and labour time.

And if you were thinking of saving all of that time and money by removing the filter completely, think again, it’s illegal to remove the DPF.

The Department for Transport states that it is an offence to remove the filter or modify the piece of equipment in a way which would result in the vehicle failing air pollutant emission standards. Breaking the law will result in the vehicle not being road worthy so if you are ever offered to have your filter removed, make sure to keep this in mind.

Every MOT now includes a check for the DPF and a smoke test from the exhaust so there is very little chance of getting away with removing the filter.

If you need to have the filter regenerated manually, you must take your vehicle to a trained professional immediately. They will initiate a process where the exhaust is heated up to a point where regeneration happens and soot is cleared from the filter.

Finding a mechanic you can trust to do a good job and charge a fair price is not always easy. We work with a network of 8,000 mechanics and garages across the UK so we can find a competitive Diesel particulate filter repair deal for you. To find the best service available in Romford:

Enter your car registration number

Give us a few details about your car and your requirements

We’ll send you a great selection of quotes from mechanics and garages in Romford.

You can then compare the quotes and read reviews from previous customers to find the best deal in Romford, before booking the DPF repair online.